{"id":107121,"date":"2026-04-17T12:49:17","date_gmt":"2026-04-17T10:49:17","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107121"},"modified":"2026-04-29T10:52:44","modified_gmt":"2026-04-29T08:52:44","slug":"televue-ethos-17mm-100-degree-eyepiece","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-ethos-17mm-100-2-oculair\/","title":{"rendered":"TeleVue Ethos 17mm \u2013 100\u00b0 2\u2033 Eyepiece"},"content":{"rendered":"<h3 class=\"wp-block-heading\">TeleVue Ethos 17mm \u2013 100\u00b0 2\u2033 Eyepiece<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The\u00a0<strong>TeleVue Ethos 17mm<\/strong>\u00a0is a top-class eyepiece for the serious observer who wants to get the most out of their telescope. With an impressive field of view of <strong>100\u00b0 and a 2\u2033 connection<\/strong> offers an unparalleled, immersive viewing experience. Thanks to advanced optics and high-quality multicoating, you'll enjoy razor-sharp images, even with fast telescopes with a low <strong>f-value<\/strong>. The foldable rubber eyecup provides extra comfort during long observation sessions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2-.jpg\" alt=\"TeleVue Ethos 17mm 2&quot; eyepiece close-up of the black Ethos 17mm eyepiece with green 100\u00b0 imprint and ridged grip ring\" class=\"wp-image-107122\" title=\"\" srcset=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2-.jpg 800w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--300x300.jpg 300w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--150x150.jpg 150w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--768x768.jpg 768w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--12x12.jpg 12w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--441x441.jpg 441w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--100x100.jpg 100w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-17mm-2--64x64.jpg 64w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">An unprecedented wide field of view for the ultimate experience<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">With the <strong>100\u00b0 field of view<\/strong> from TeleVue <strong>Ethos 17mm<\/strong> it feels like you're floating in the middle of the universe. You experience a panoramic view without distracting borders or tunnel vision. This eyepiece is ideal for observing <strong>Extensive deep-sky objects<\/strong>, open star clusters, and the Milky Way. You also benefit from the large field of view and high edge-to-edge sharpness when observing the Moon and planets.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comfort and compatibility for every telescope<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Ethos 17mm<\/strong> is designed for maximum ease of use. Thanks to the <strong>2\" connection<\/strong> fits virtually any modern telescope. The foldable eyecup offers comfort, even for eyeglass wearers. Excellent optical performance is maintained, even with fast telescopes <strong>Opening ratio <\/strong>(like f\/4). The built-in filter thread makes it easy to <strong>astronomical <\/strong>filters to use for even more detail and contrast.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What we recommend<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Advanced and demanding observers who want to get the most out of their telescope<\/li>\n\n\n\n<li>Users of Dobson or other light-gathering telescopes<\/li>\n\n\n\n<li>Anyone looking for a panoramic view and ultimate comfort<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What you can see<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extensive deep-sky objects such as nebulae and star clusters<\/li>\n\n\n\n<li>The moon with a lot of detail and without a tunnel effect<\/li>\n\n\n\n<li>Planets with a wide and sharp field of view<\/li>\n\n\n\n<li>The Milky Way and large parts of the night sky<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Optics<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Type<\/strong>XWA (Extreme Wide Angle Eyepiece)<\/li>\n\n\n\n<li><strong>Focal length<\/strong>: 17 mm<\/li>\n\n\n\n<li><strong>Field of view<\/strong>: 100\u00b0<\/li>\n\n\n\n<li><strong>Optics Coating<\/strong>Multi-coated<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Mounting &amp; operation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Telescope connection<\/strong>: 2\u2033<\/li>\n\n\n\n<li><strong>Filter thread<\/strong>Yes (for 2\" filters)<\/li>\n\n\n\n<li><strong>Eyecup<\/strong>Foldable rubber<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Equipment<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Weight<\/strong>703 g<\/li>\n\n\n\n<li><strong>Length<\/strong>168 mm<\/li>\n\n\n\n<li><strong>Series<\/strong>Ethos<\/li>\n\n\n\n<li><strong>Inert gas filled<\/strong>: No<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The TeleVue Ethos 17mm \u2013 100\u00b0 2\u2033 Eyepiece features an extremely wide field of view, high-quality multicoating, and a comfortable eyecup. It's ideal for deep and immersive observations of the cosmos, delivering razor-sharp images right to the edge.<\/p>","protected":false},"featured_media":107122,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[3129,56,3131],"product_tag":[],"class_list":["post-107121","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-oculairs-en-barlows","product_cat-telescoop-accessoires","product_cat-groothoek-oculairen-wide-field","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":107124,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-21mm-100-2-oculair\/","url_meta":{"origin":107121,"position":0},"title":"TeleVue Ethos 21mm - 100\u00b0 2\" Eyepiece","author":"Abdullah Ibrar","date":"17-04-2026","format":false,"excerpt":"TeleVue Ethos 21mm \u2013 100\u00b0 2\" Oculair wordt geleverd met een spectaculair breed gezichtsveld, hoogwaardige multicoating en comfortabele opvouwbare oogschelp. Ideaal voor diepe, meeslepende observaties van het heelal met maximale scherpte en contrast.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 21mm 2\" close-up van het zwarte Ethos 21 mm oculair met groene 100\u00b0 opdruk en geribbelde gripring","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-21mm-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-21mm-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-21mm-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-21mm-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107545,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-10mm-100-oculair\/","url_meta":{"origin":107121,"position":1},"title":"TeleVue Ethos 10mm 100\u00b0 \u2013 Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue Ethos 10mm 100\u00b0 \u2013 Oculair is een high-end ultra wide oculair met 100\u00b0 beeldveld en uitzonderlijke scherpte tot aan de rand.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 10mm 1,25\"\/2\" productfoto van het Ethos 10 mm oculair met groene opschriftring, gekartelde grip en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107546,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-13mm-100-oculair\/","url_meta":{"origin":107121,"position":2},"title":"TeleVue Ethos 13mm 100\u00b0 \u2013 Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue Ethos 13mm 100\u00b0 \u2013 Oculair is een premium ultra wide oculair met 100\u00b0 beeldveld en uitzonderlijke scherpte over het hele veld.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 13mm 1,25\"\/2\" productfoto van het Ethos 13 mm oculair met groene opschriftring en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-3.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-3.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107358,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-6mm-6-mm-xwa-oculair\/","url_meta":{"origin":107121,"position":3},"title":"TeleVue Ethos 6mm - 6mm XWA Eyepiece","author":"Abdullah Ibrar","date":"21-04-2026","format":false,"excerpt":"eleVue Ethos 6mm \u2013 6 mm XWA Eyepiece comes with a 1.25\"\/2\" adapter and collapsible eyecup. High-end 100\u00b0 wide-angle eyepiece with exceptional edge-to-edge sharpness.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 6mm 1,25\"\/2\" close-up productfoto van het oculair met groene opschriftband en metalen vatting","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-6mm-1-25-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-6mm-1-25-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-6mm-1-25-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-6mm-1-25-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107527,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-8mm-oculair\/","url_meta":{"origin":107121,"position":4},"title":"TeleVue Ethos 8mm \u2013 Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue Ethos 8mm \u2013 Oculair is een high-end 8mm oculair met een indrukwekkend 100\u00b0 beeldveld en uitzonderlijke randscherpte.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 8mm 1,25\"\/2\" productfoto van het Ethos 8 mm oculair met groene opschriftring en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107537,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-47mm-110-oculair\/","url_meta":{"origin":107121,"position":5},"title":"TeleVue Ethos 4.7mm 110\u00b0 - Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue Ethos 4,7mm 110\u00b0 \u2013 Oculair is een premium ultra wide oculair met 110\u00b0 beeldveld voor haarscherpe waarnemingen bij hoge vergroting.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 4,7mm 1,25\"\/2\" close-up van het Ethos 4,7 mm oculair met groene opschriftring, gekartelde grip en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-4-7mm-1-25-2-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-4-7mm-1-25-2-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-4-7mm-1-25-2-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-4-7mm-1-25-2-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/107121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=107121"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/107122"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=107121"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=107121"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=107121"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=107121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}